本题目来源于试卷: Physics Unit18: Electric Currents，类别为 通用国际物理
[单选题]
A platinum wire is used to determine the+ yqx3suuyew8w73+0sh; bihi melting point of indium. The resist)wew kcg1so+xcv ( f/r) 3xe6uance of the platinum wire is/3)wwcu 6g+ c f)vse1 xeor(kx $2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)
A. $117 ^{\circ}C$
B. $137 ^{\circ}C$
C. $157 ^{\circ}C$
D. $351 ^{\circ}C$
参考答案: C
本题详细解析:
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